Acid-catalyzed condensation of 2,2′-diamino-1,1′-biaryls for the synthesis of benzo[c]carbazoles
作者:Byong-Yun Lim、Min-Kyung Choi、Cheon-Gyu Cho
DOI:10.1016/j.tetlet.2011.09.001
日期:2011.11
2,2′-Diamino-1,1′-biaryls were found to undergo ring-closure condensation reaction to afford benzo[c]carbazoles in good to excellent yield. Coupled with the synthesis of 2,2′-biaryldiamines from diaryl hydrazides via [3,3]-sigmatropic rearrangement, it constitutes a new efficient synthetic method for benzo[c]carbazoles and related compounds.
发现2,2'-二氨基-1,1'-联芳基发生闭环缩合反应,得到苯并[ c ]咔唑的产率高至优异。结合通过[3,3]-σ重排由二芳基酰肼合成2,2'-联芳二胺,它构成了苯并[ c ]咔唑及其相关化合物的一种新型有效合成方法。